18th Edition Iet Wiring Regulations. Electric W... May 2026

RCDs (30mA) are required for socket outlets (up to 32A) where they may be used by children, disabled persons, or in general-use domestic settings.

Omitting an RCD via a risk assessment is now more restricted and generally not permitted in dwellings. Electricians Guide To The Building Regulations 18th Edition 18th edition IET wiring regulations. Electric w...

: Protection against transient overvoltages is required where consequences could result in serious injury, failure of safety services (like fire alarms), or significant financial/data loss. For other cases, SPDs must be installed unless the owner specifically signs a declaration accepting the risk of equipment damage. Residual Current Devices (RCDs) : RCDs (30mA) are required for socket outlets (up